(i) Which direction will a magnetic needle stay when placed at A.
(ii) What will happen when key K is closed?
(iii) Keeping K closed when moving contact C of the rheostat is moved from X to Y' what
will happen.
(iv) If a pivoted needle of iron were placed at A, how will the answers to (i) and (ii) change
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Email: nioshelp24@gmail.com
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